Contra Costa County prosecutors announced Thursday they will charge Eddie Carr, 28, with two counts of child endangerment, one count of being a felon in possession of a firearm, and one count of criminal storage of a firearm and one count of possesion of cocaine, according to the Chronicle.

Investigators said the gun was actually the boy's mother's, she will not face charges. Prosecutors said Carr removed it from a locked safe, loaded it, and put it in the bedroom drawer the morning of the shooting.

"This is clearly a...horrible tragedy that was based on, in its core, negligence," Contra Costa County Deputy District Attorney John Cope told Bay City News.